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- ArticleJuly 2005
Visual simulation of weathering by γ-ton tracing
SIGGRAPH '05: ACM SIGGRAPH 2005 PapersPages 1127–1133https://doi.org/10.1145/1186822.1073321Weathering modeling introduces blemishes such as dirt, rust, cracks and scratches to virtual scenery. In this paper we present a visual stimulation technique that works well for a wide variety of weathering phenomena. Our technique, called γ-ton tracing, ...
- ArticleJuly 2005
Modeling and rendering of quasi-homogeneous materials
SIGGRAPH '05: ACM SIGGRAPH 2005 PapersPages 1054–1061https://doi.org/10.1145/1186822.1073311Many translucent materials consist of evenly-distributed heterogeneous elements which produce a complex appearance under different lighting and viewing directions. For these quasi-homogeneous materials, existing techniques do not address how to acquire ...
- ArticleJuly 2005
A practical analytic single scattering model for real time rendering
SIGGRAPH '05: ACM SIGGRAPH 2005 PapersPages 1040–1049https://doi.org/10.1145/1186822.1073309We consider real-time rendering of scenes in participating media, capturing the effects of light scattering in fog, mist and haze. While a number of sophisticated approaches based on Monte Carlo and finite element simulation have been developed, those ...
- ArticleJuly 2005
Real-Time subspace integration for St. Venant-Kirchhoff deformable models
SIGGRAPH '05: ACM SIGGRAPH 2005 PapersPages 982–990https://doi.org/10.1145/1186822.1073300In this paper, we present an approach for fast subspace integration of reduced-coordinate nonlinear deformable models that is suitable for interactive applications in computer graphics and haptics. Our approach exploits dimensional model reduction to ...
- ArticleJuly 2005
Coupling water and smoke to thin deformable and rigid shells
SIGGRAPH '05: ACM SIGGRAPH 2005 PapersPages 973–981https://doi.org/10.1145/1186822.1073299We present a novel method for solid/fluid coupling that can treat infinitesimally thin solids modeled by a lower dimensional triangulated surface. Since classical solid/fluid coupling algorithms rasterize the solid body onto the fluid grid, an entirely ...
- ArticleJuly 2005
Animating sand as a fluid
SIGGRAPH '05: ACM SIGGRAPH 2005 PapersPages 965–972https://doi.org/10.1145/1186822.1073298We present a physics-based simulation method for animating sand. To allow for efficiently scaling up to large volumes of sand, we abstract away the individual grains and think of the sand as a continuum. In particular we show that an existing water ...
- ArticleJuly 2005
Fast frictional dynamics for rigid bodies
SIGGRAPH '05: ACM SIGGRAPH 2005 PapersPages 946–956https://doi.org/10.1145/1186822.1073295We describe an efficient algorithm for the simulation of large sets of non-convex rigid bodies. The algorithm finds a simultaneous solution for a multi-body system that is linear in the total number of contacts detected in each iteration. We employ a ...
- ArticleJuly 2005
Adaptive dynamics of articulated bodies
SIGGRAPH '05: ACM SIGGRAPH 2005 PapersPages 936–945https://doi.org/10.1145/1186822.1073294Forward dynamics is central to physically-based simulation and control of articulated bodies. We present an adaptive algorithm for computing forward dynamics of articulated bodies: using novel motion error metrics, our algorithm can automatically ...
- ArticleJuly 2005
Real-time relief mapping on arbitrary polygonal surfaces
SIGGRAPH '05: ACM SIGGRAPH 2005 PapersPage 935https://doi.org/10.1145/1186822.1073292We present a technique for mapping relief textures onto arbitrary polygonal models in real time, producing correct self-occlusions, interpenetrations, shadows and per-pixel lighting. The technique uses a pixel-driven formulation based on an efficient ...
- ArticleJuly 2005
Discontinuous fluids
SIGGRAPH '05: ACM SIGGRAPH 2005 PapersPages 915–920https://doi.org/10.1145/1186822.1073283At interfaces between different fluids, properties such as density, viscosity, and molecular cohesion are discontinuous. To animate small-scale details of incompressible viscous multi-phase fluids realistically, we focus on the discontinuities in the ...
- ArticleJuly 2005
A vortex particle method for smoke, water and explosions
SIGGRAPH '05: ACM SIGGRAPH 2005 PapersPages 910–914https://doi.org/10.1145/1186822.1073282Vorticity confinement reintroduces the small scale detail lost when using efficient semi-Lagrangian schemes for simulating smoke and fire. However, it only amplifies the existing vorticity, and thus can be insufficient for highly turbulent effects such ...
- ArticleJuly 2005
Animating gases with hybrid meshes
SIGGRAPH '05: ACM SIGGRAPH 2005 PapersPages 904–909https://doi.org/10.1145/1186822.1073281This paper presents a method for animating gases on unstructured tetrahedral meshes to efficiently model the interaction of fluids with irregularly shaped obstacles. Because our discretization scheme parallels that of the standard staggered grid mesh. ...
- ArticleJuly 2005
Real-time rendering of plant leaves
SIGGRAPH '05: ACM SIGGRAPH 2005 PapersPages 712–719https://doi.org/10.1145/1186822.1073252This paper presents a framework for the real-time rendering of plant leaves with global illumination effects. Realistic rendering of leaves requires a sophisticated appearance model and accurate lighting computation. For leaf appearance we introduce a ...
- ArticleJuly 2005
Meshless deformations based on shape matching
SIGGRAPH '05: ACM SIGGRAPH 2005 PapersPages 471–478https://doi.org/10.1145/1186822.1073216We present a new approach for simulating deformable objects. The underlying model is geometrically motivated. It handles pointbased objects and does not need connectivity information. The approach does not require any pre-processing, is simple to ...
- ArticleJuly 2005
Automatic determination of facial muscle activations from sparse motion capture marker data
SIGGRAPH '05: ACM SIGGRAPH 2005 PapersPages 417–425https://doi.org/10.1145/1186822.1073208We built an anatomically accurate model of facial musculature, passive tissue and underlying skeletal structure using volumetric data acquired from a living male subject. The tissues are endowed with a highly nonlinear constitutive model including ...